CN112727255A - Electric release and use method thereof - Google Patents
Electric release and use method thereof Download PDFInfo
- Publication number
- CN112727255A CN112727255A CN202011523652.5A CN202011523652A CN112727255A CN 112727255 A CN112727255 A CN 112727255A CN 202011523652 A CN202011523652 A CN 202011523652A CN 112727255 A CN112727255 A CN 112727255A
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- Prior art keywords
- strip
- shaped notch
- main body
- support
- cover
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B63/00—Locks or fastenings with special structural characteristics
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
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- Structural Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention belongs to the technical field of trippers, and particularly relates to an electric tripper which comprises a main body and a remote control terminal, wherein an inverted U-shaped hook is fixedly connected to the main body, a first notch is formed in the main body, a groove is formed in one side of the lower end of the main body, a positioning column is fixedly arranged on the other side of the lower end of the main body, a supporting rod is hinged in the groove, a first strip-shaped notch with a downward opening is formed in the free end of the positioning column, the free end of the supporting rod is located in the first strip-shaped notch, a supporting sleeve is rotatably arranged on the positioning column, a second strip-shaped notch with a downward opening is formed in one end, close to the groove, of the supporting sleeve, a ratchet wheel assembly is arranged on the supporting sleeve, a transmission gear is fixedly arranged on. The purpose is as follows: the problem of the existence that leads to by the release structural defect of current is easily injured experimenter by a crashing object after falling is solved.
Description
Technical Field
The invention belongs to the technical field of releases, and particularly relates to an electric release and a using method thereof.
Background
In the field of drop experiments and in the field of wire rope fixing, a release is a component which is often required to be used.
In the drop test, the tested object is required to be lifted to a measured height, then the tested object is released to drop freely, and whether the tested object is qualified or not is judged according to the integrity of the tested object after dropping.
The tripper is connected with an object to be tested through components such as a steel wire rope, and after the object to be tested is lifted to a specified height, the tripper is opened, so that the steel wire rope is separated from the tripper, and the object to be tested falls down.
The action of an existing release for releasing a steel wire rope is generally completed by manual operation, for example, a pull rope is bound on the release, and the release acts by pulling tension, so that the steel wire rope is separated from the release. In the process, because the object to be tested needs to be lifted to the measuring height, the experimenter needs to be close to the object to be tested by adopting the above-mentioned tripping operation, and the problem that the experimenter is easily injured by crashing after the object to be tested falls exists.
Disclosure of Invention
The purpose of the invention is: the electric release and the using method thereof are used for solving the problem that an experimenter is easily injured by a crashing object after the experimented object falls due to the structural defects of the existing release.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
an electric release comprises a main body and a remote control terminal, wherein an inverted U-shaped hook is fixedly connected on the main body, the main body is provided with a first gap, the lower end of the main body is provided with a groove at one side of the first gap, a positioning column is fixedly arranged at the other side, a supporting rod is hinged in the groove, a first strip-shaped notch with a downward opening is arranged at the free end of the positioning column, the free end of the supporting rod is positioned in the first strip-shaped notch, the positioning column is rotatably provided with a supporting sleeve, a second strip-shaped notch with a downward opening is arranged at one end of the supporting sleeve close to the groove, a ratchet wheel component is arranged on the supporting sleeve, the ratchet wheel component is fixedly provided with a transmission gear, the main body is also provided with a motor, the motor is in signal connection with the remote control terminal, and a driving gear is fixedly mounted on an output shaft of the motor and meshed with the transmission gear.
Further inject, support the cover and be close to recess one end and still seted up the third bar breach that open side down, the width size of third bar breach equals with the internal diameter size who supports the cover, the annular mounting groove has been seted up to the free end of bracing piece, install antifriction bearing in the annular mounting groove, antifriction bearing is located the third bar breach, the diameter size of bracing piece equals with antifriction bearing's external diameter size, bracing piece, antifriction bearing, reference column and the axis collineation that supports the cover. Such structural design replaces the bracing piece through antifriction bearing and supports the cover contact, converts the sliding friction between bracing piece and the support cover into antifriction bearing's rolling friction, reduces frictional force for the motor is when driving to support the cover, and is more laborsaving.
Further inject, install the guard shield on the main part, the guard shield cover is established on driving gear and drive gear. The structure design can avoid the potential safety hazard problem caused by the exposure of the driving gear and the transmission gear.
Further defined, the diameter size of the driving gear is smaller than that of the transmission gear. Due to the structural design, a speed reducing mechanism is formed between the driving gear and the transmission gear, so that the requirement on the torque of the motor is reduced under the condition that the load which needs to be borne by the transmission gear is not changed, and the cost is saved.
Further limited, a pulling rod is detachably mounted on the supporting sleeve. Such structural design when rotating the support cover, can install the trip lever on the support cover, utilizes the trip lever to rotate the support cover, and it is more convenient to use.
Further inject, the one end integrated into one piece of pulling rod has the projection, the pulling rod is close to projection one end and has seted up the external screw thread, set up coaxial screw thread blind hole and through-hole on the support sleeve, the diameter size of screw thread blind hole is greater than the diameter size of through-hole. Due to the structural design, the external threads are matched with the threaded blind holes, so that the detachable connection between the pulling rod and the supporting sleeve is completed, the structure is simple, and the installation is convenient; simultaneously, utilize mutually supporting of projection and through-hole, make when pulling, the projection is located the through-hole, provide the support to the action of pulling the pole, and then make the whole length of external screw thread under the condition of short, just can make and support the cover and can provide sufficient reverse effort for pulling the pole, avoid being short excessively because of external screw thread length, and what cause pulls when the pole, the problem of the thread damage that probably causes, and external screw thread length is short, can make when installing pulling the pole on the support cover, the number of turns that need to rotate still less, it is more convenient to install.
Further limit, the main body is provided with a positioning notch.
Further, the motor is a servo motor. By the structural design, the angle of each rotation of the motor can be set on the terminal, and the motor can be used together with the pulling rod and the positioning notch, so that the motor can be stopped only by rotating a specific angle after being remotely controlled each time, namely when the first strip-shaped notch and the second strip-shaped notch are aligned, the operation is stopped without secondary stop operation, and the use is more convenient; the cooperation is pulled pole and location breach and is used together, when experimental again, only need pull the pole and install on the supporting sleeve, pull the pole again to the location breach in can, at this moment, the initial position of second bar breach is confirmed, cooperation step motor's ration rotates, can accomplish and fall the experiment.
Further inject, support the cover and keep away from recess one end and seted up the annular groove, wear to be equipped with first tapered roller bearing in the annular groove, the outer wall integrated into one piece that supports the cover and keep away from recess one end has annular boss, the cover is equipped with fixed cover on the support cover, the cover is equipped with second tapered roller bearing between fixed cover and annular boss to the support cover, fixed cover fixed mounting is in the main part. According to the structural design, the supporting sleeve is supported by the first conical roller bearing and the second conical roller bearing and is connected with the main body by the fixing sleeve, so that the problem of abrasion caused by direct contact of the supporting sleeve with the main body and the positioning column is solved.
Further inject, the ratchet wheel subassembly includes outer ratchet wheel and interior wheel, outer ratchet wheel and drive gear fixed connection, interior wheel and support cover fixed connection, interior the wheel is last to be seted up the mounting groove, it has the pawl to articulate in the mounting groove, the pawl free end card is located in the ratchet of outer ratchet wheel, be connected with compression spring between pawl and the mounting groove.
The use method of the electric release comprises the following steps:
1) rotating the support sleeve to align the first strip-shaped notch and the second strip-shaped notch, hanging the steel wire rope bound on the tested object on the support rod, rotating the support rod to enable the free end of the support rod to enter the first strip-shaped notch through the second strip-shaped notch, and then rotating the support sleeve clockwise to enable the first strip-shaped notch and the second strip-shaped notch to be staggered;
2) the main body is hoisted by the lifting mechanism, so that the tested object is hoisted to the measured height;
3) the motor is remotely controlled to rotate through the remote control terminal until the first strip-shaped notch and the second strip-shaped notch are aligned, the supporting rod hinged to the main body breaks away from the first strip-shaped notch and the second strip-shaped notch under the action of the tested object and the steel wire rope, the tested object freely falls down, and the falling test is completed.
The invention adopting the technical scheme has the advantages that:
1. the motor can be controlled to act by remote operation of the remote controller, and then the motor drives the support sleeve to act, so that the first strip-shaped notch and the second strip-shaped notch are aligned, the support rod hinged on the main body is separated from the first strip-shaped notch and the second strip-shaped notch under the action of the tested object and the steel wire rope, the purpose of releasing the steel wire rope is achieved, the tested object automatically falls off, in the process, the experimenter is far away from the tested object, and the problem that the experimenter is easily injured after the tested object falls off can be avoided;
2. replace the bracing piece through antifriction bearing and support the cover contact, convert the bracing piece and the sliding friction who supports between the cover into antifriction bearing's rolling friction, reduce frictional force for the motor is when driving to support the cover, and is more laborsaving:
3. the output shaft of the motor and the support sleeve are connected through the ratchet mechanism in a transmission manner, so that the problem that the motor, the driving gear and the transmission gear are damaged because the support sleeve is driven to rotate at a rated rotating speed higher than that of the motor for driving the support sleeve to rotate by the force exerted on the support rod by an experimental object through a steel wire rope when the second strip-shaped notch of the support sleeve is not completely aligned with the first strip-shaped notch of the positioning column in the rotating process of the support sleeve can be solved;
4. meanwhile, the ratchet mechanism is in transmission connection with the output shaft of the motor and the supporting sleeve, so that when the supporting sleeve is reset, the supporting sleeve is manually rotated (at the moment, the supporting sleeve does not bear the gravity applied by an object to be tested, the supporting sleeve is manually operated, and the labor is not excessively wasted), the operation is not required to be realized through the motor, the operation flow is simplified, and the equipment cost is saved.
Drawings
The invention is further illustrated by the non-limiting examples given in the accompanying drawings;
fig. 1 is a first schematic structural diagram of an embodiment of an electric release and a method for using the same according to the present invention;
fig. 2 is a schematic cross-sectional view of an embodiment of an electric release and a method for using the same according to the present invention;
FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;
fig. 4 is a schematic structural diagram of an embodiment of an electric release and a method for using the same according to the present invention;
fig. 5 is a schematic structural diagram of a third embodiment of an electric release and a method for using the same according to the present invention;
fig. 6 is a schematic structural view of a positioning pillar portion in an embodiment of an electric release and a method for using the same according to the present invention;
FIG. 7 is a schematic diagram of the ratchet assembly and the transmission gear portion of an embodiment of the electrical release and method of using the electrical release of the present invention;
fig. 8 is an exploded view of a portion of the components of an embodiment of an electric release and a method for using the same according to the present invention;
fig. 9 is a schematic structural diagram of a trip lever in an embodiment of an electric release and a method for using the same according to the present invention;
fig. 10 is a schematic structural view of a support sleeve portion in an embodiment of an electric release and a method of using the same according to the present invention;
the main element symbols are as follows:
a main body 1, an inverted U-shaped hook 10, a first gap 11, a groove 12,
A support rod 2, a rolling bearing 20, an annular mounting groove 21,
A positioning column 3, a first strip-shaped notch 31,
A supporting sleeve 4, a second strip-shaped notch 41, a third strip-shaped notch 42,
A motor 6, a driving gear 61,
The pulling rod 7, the positioning notch 70, the convex column 71, the threaded blind hole 711, the through hole 712, the external thread 72,
The fixed sleeve 8, the annular groove 801, the annular boss 802, the first tapered roller bearing 81 and the second tapered roller bearing 82.
Detailed Description
The present invention will be described in detail with reference to the drawings and specific embodiments, wherein like reference numerals are used for similar or identical parts in the drawings or the description, and implementations not shown or described in the drawings are known to those of ordinary skill in the art. In addition, directional terms, such as "upper", "lower", "top", "bottom", "left", "right", "front", "rear", and the like, used in the embodiments are only directions referring to the drawings, and are not intended to limit the scope of the present invention.
As shown in fig. 1 to 10, the electric release of the present invention comprises a main body 1 and a remote control terminal, wherein the main body 1 is fixedly connected with an inverted U-shaped hook 10, the main body 1 is provided with a first notch 11, one side of the first notch at the lower end of the main body 1 is provided with a groove 12, the other side of the first notch is fixedly provided with a positioning column 3, the groove 12 is internally hinged with a support rod 2, the free end of the positioning column 3 is provided with a first strip-shaped notch 31 with a downward opening, the free end of the support rod 2 is positioned in the first strip-shaped notch 31, the positioning column 3 is rotatably provided with a support sleeve 4, one end of the support sleeve 4 close to the groove 12 is provided with a second strip-shaped notch 41 with a downward opening, the support sleeve 4 is provided with a ratchet wheel assembly 5, the ratchet wheel assembly 5 is fixedly provided with a transmission gear 51, the main, the drive gear 61 meshes with the transmission gear 51.
Signal connection between motor 6 and the remote control terminal, wireless signal transmission modes such as available bluetooth transmission, LAN transmission also can realize signal connection with traditional wire, and this signal connection all belongs to prior art, so this patent does not specifically restrict, as long as can realize the operation of remote control terminal to motor 6 can.
The main body 1 is provided with a protective cover which is sleeved on the driving gear 61 and the transmission gear 51. The potential safety hazard problem caused by the exposure of the driving gear 61 and the transmission gear 51 can be avoided.
The driving gear 61 has a smaller diameter than the transmission gear 51. A speed reducing mechanism is formed between the driving gear 61 and the transmission gear 51, so that under the condition that the load which needs to be borne by the transmission gear 51 is not changed, the requirement on the torque of the motor 6 is reduced, and the cost is saved.
The support sleeve 4 is detachably provided with a pulling rod 7. When supporting set 4 and rotating, can install trip lever 7 on supporting set 4, utilize trip lever 7 to rotate supporting set 4, it is more convenient to use.
One end of the pulling rod 7 is integrally formed with a convex column 71, one end of the pulling rod 7 close to the convex column 71 is provided with an external thread 72, the support sleeve 4 is provided with a threaded blind hole 711 and a through hole 712 which are coaxial, and the diameter of the threaded blind hole 711 is larger than that of the through hole 712. The external thread 72 is matched with the threaded blind hole 711, so that the detachable connection between the trip lever 7 and the support sleeve 4 is completed, and the structure is simple and the installation is convenient; meanwhile, the convex column 71 is matched with the through hole 712, so that when the wrench is pulled, the convex column 71 is located in the through hole 712 to support the action of the wrench rod 7, and further, the whole length of the external thread 72 is shorter, so that the support sleeve 4 can provide enough reverse acting force for the wrench rod 7, and the problem of thread damage possibly caused by over-short length of the external thread 72 when the wrench rod 7 is pulled is avoided, and the length of the external thread 72 is shorter, so that when the wrench rod 7 is installed on the support sleeve 4, fewer turns of rotation are needed, and the installation is more convenient.
The main body 1 is provided with a positioning notch 70.
The motor 6 is a servo motor. The angle of each rotation of the motor 6 can be set on the terminal, and the motor 6 can be used together with the pulling rod 7 and the positioning notch 70, so that the motor 6 can be stopped when being remotely controlled each time and only needs to rotate by a specific angle, namely the first strip-shaped notch 31 and the second strip-shaped notch 41 are aligned, secondary stopping operation is not needed, and the use is more convenient; the cooperation trip lever 7 and location breach 70 use together, when carrying out the experiment again, only need to install trip lever 7 on supporting set 4, again trip lever 7 to location breach 70 in can, at this moment, the initial position of second bar breach 41 is confirmed, and the cooperation step motor's ration rotates, can accomplish and fall the experiment.
The ratchet assembly 5 comprises an outer ratchet 501 and an inner wheel 502, the outer ratchet 501 is fixedly connected with the transmission gear 51, the inner wheel 502 is fixedly connected with the support sleeve 4, an installation groove 5021 is formed in the inner wheel 502, a pawl 5022 is hinged in the installation groove 5021, the free end of the pawl 5022 is clamped in a ratchet of the outer ratchet 501, and a compression spring 5023 is connected between the pawl 5022 and the installation groove 5021.
In this embodiment, the method for using the electric release includes the following steps:
1) rotating the support sleeve 4 to align the first strip-shaped notch 31 and the second strip-shaped notch 41, then hanging the steel wire rope bound on the tested object on the support rod 2, rotating the support rod 2 to enable the free end of the support rod 2 to enter the first strip-shaped notch 31 through the second strip-shaped notch 41, and then rotating the support sleeve 4 clockwise to enable the first strip-shaped notch 31 and the second strip-shaped notch 41 to be staggered;
2) the main body 1 is lifted by the lifting mechanism, so that the tested object is lifted to the measuring height;
3) the motor is remotely controlled to rotate through the remote control terminal until the first strip-shaped notch 31 and the second strip-shaped notch 41 are aligned, the supporting rod 2 hinged to the main body 1 is separated from the first strip-shaped notch 31 and the second strip-shaped notch 41 under the action of the tested object and the steel wire rope, the tested object freely falls down, and the falling test is completed.
The electric release and the use method thereof provided by the invention are described in detail above. The description of the specific embodiments is only intended to facilitate an understanding of the method of the invention and its core ideas. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (8)
1. An electrodynamic type release which characterized in that: the remote control device comprises a main body (1) and a remote control terminal, wherein an inverted U-shaped hook (10) is fixedly connected to the main body (1), a first notch (11) is formed in the main body (1), a groove (12) is formed in one side of the first notch at the lower end of the main body (1), a positioning column (3) is fixedly arranged on the other side of the first notch, a supporting rod (2) is hinged in the groove (12), a first strip-shaped notch (31) with a downward opening is formed in the free end of the positioning column (3), the free end of the supporting rod (2) is located in the first strip-shaped notch (31), a supporting sleeve (4) is rotatably arranged on the positioning column (3), a second strip-shaped notch (41) with a downward opening is formed in one end, close to the groove (12), of the supporting sleeve (4), a ratchet wheel assembly (5) is arranged on the supporting sleeve (, still install motor (6) on main part (1), motor (6) and remote control terminal signal connection, fixed mounting has driving gear (61) on the output shaft of motor (6), driving gear (61) and drive gear (51) meshing, support cover (4) and still seted up third bar breach (42) that open side down near recess (12) one end, the width dimension of third bar breach (42) equals with the internal diameter size who supports cover (4), annular mounting groove (21) have been seted up to the free end of bracing piece (2), install antifriction bearing (20) in annular mounting groove (21), antifriction bearing (20) are located third bar breach (42), the diameter dimension of bracing piece (2) equals the external diameter size of antifriction bearing (20), bracing piece (2), antifriction bearing (20), The central axes of the positioning column (3) and the supporting sleeve (4) are collinear.
2. The electrical trip unit of claim 1, wherein: and a pulling rod (7) is detachably arranged on the support sleeve (4).
3. The electrical trip unit of claim 2, wherein: one end of the pulling rod (7) is integrally formed with a convex column (71), one end of the pulling rod (7), which is close to the convex column (71), is provided with an external thread (72), the support sleeve (4) is provided with a coaxial thread blind hole (711) and a through hole (712), and the diameter of the thread blind hole (711) is larger than that of the through hole (712).
4. The electrical trip unit of claim 3, wherein: the main body (1) is provided with a positioning notch (70).
5. The electrical trip unit of claim 4, wherein: the motor (6) is a servo motor.
6. The electrical trip unit of claim 1, wherein: support cover (4) and keep away from recess (12) one end and seted up annular groove (801), wear to be equipped with first tapered roller bearing (81) in annular groove (801), the outer wall integrated into one piece that support cover (4) kept away from recess (12) one end has annular boss (802), it is equipped with fixed cover (8) to support the cover on cover (4), it is equipped with second tapered roller bearing (82) to support cover (4) to overlap between fixed cover (8) and annular boss (802), fixed cover (8) fixed mounting is on main part (1).
7. The electrical trip unit of claim 1, wherein: ratchet subassembly (5) are including outer ratchet (501) and interior wheel (502), outer ratchet (501) and drive gear (51) fixed connection, interior wheel (502) and support cover (4) fixed connection, mounting groove (5021) have been seted up on interior wheel (502), it has pawl (5022) to articulate in mounting groove (5021), pawl (5022) free end card is located in the ratchet of outer ratchet (501), be connected with compression spring (5023) between pawl (5022) and mounting groove (5021).
8. The method of using an electrically operated trip unit according to any of claims 1 to 7, comprising the steps of:
1) rotating the support sleeve (4) to align the first strip-shaped notch (31) and the second strip-shaped notch (41), then hanging the steel wire rope bound on the tested object on the support rod (2), rotating the support rod (2) to enable the free end of the support rod (2) to enter the first strip-shaped notch (31) through the second strip-shaped notch (41), and then rotating the support sleeve (4) clockwise to enable the first strip-shaped notch (31) and the second strip-shaped notch (41) to be staggered;
2) the main body (1) is hoisted by a lifting mechanism, so that the tested object is hoisted to the measuring height;
3) the motor is remotely controlled to rotate through the remote control terminal until the first strip-shaped notch (31) and the second strip-shaped notch (41) are aligned, the supporting rod (2) hinged to the main body (1) is separated from the first strip-shaped notch (31) and the second strip-shaped notch (41) under the action of the tested object and the steel wire rope, the tested object freely falls down, and the falling test is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011523652.5A CN112727255A (en) | 2020-12-21 | 2020-12-21 | Electric release and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011523652.5A CN112727255A (en) | 2020-12-21 | 2020-12-21 | Electric release and use method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112727255A true CN112727255A (en) | 2021-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011523652.5A Pending CN112727255A (en) | 2020-12-21 | 2020-12-21 | Electric release and use method thereof |
Country Status (1)
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| CN (1) | CN112727255A (en) |
Citations (8)
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|---|---|---|---|---|
| CN103711812A (en) * | 2013-09-13 | 2014-04-09 | 重庆昌德成电子有限公司 | Unidirectional-drive power device of electric motorcycle |
| US20150114084A1 (en) * | 2012-03-31 | 2015-04-30 | China University Of Mining & Technology (Beijing) | Dynamics performance testing system |
| CN104677586A (en) * | 2013-12-02 | 2015-06-03 | 承德市金建检测仪器有限公司 | Impact test device |
| CN105539737A (en) * | 2015-12-31 | 2016-05-04 | 国家***第一海洋研究所 | Water-borne electronic remote control releaser |
| CN109707242A (en) * | 2019-02-28 | 2019-05-03 | 上海正经科技有限公司 | A kind of buckle releaser, electronic buckle releaser, electronic tripping system and anti-traction rope of wandering away |
| CN209280268U (en) * | 2019-01-07 | 2019-08-20 | 北京力达塑料制造有限公司 | Safety cap detects Apparatus for Impacting at low-temp |
| CN209581891U (en) * | 2018-12-24 | 2019-11-05 | 成都庆军科技有限公司 | A kind of tripping gear and its electric stringing unmanned plane |
| CN211198365U (en) * | 2019-12-06 | 2020-08-07 | 河北万方中天科技有限公司 | Automatic unhooking device of crane |
-
2020
- 2020-12-21 CN CN202011523652.5A patent/CN112727255A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150114084A1 (en) * | 2012-03-31 | 2015-04-30 | China University Of Mining & Technology (Beijing) | Dynamics performance testing system |
| CN103711812A (en) * | 2013-09-13 | 2014-04-09 | 重庆昌德成电子有限公司 | Unidirectional-drive power device of electric motorcycle |
| CN104677586A (en) * | 2013-12-02 | 2015-06-03 | 承德市金建检测仪器有限公司 | Impact test device |
| CN105539737A (en) * | 2015-12-31 | 2016-05-04 | 国家***第一海洋研究所 | Water-borne electronic remote control releaser |
| CN209581891U (en) * | 2018-12-24 | 2019-11-05 | 成都庆军科技有限公司 | A kind of tripping gear and its electric stringing unmanned plane |
| CN209280268U (en) * | 2019-01-07 | 2019-08-20 | 北京力达塑料制造有限公司 | Safety cap detects Apparatus for Impacting at low-temp |
| CN109707242A (en) * | 2019-02-28 | 2019-05-03 | 上海正经科技有限公司 | A kind of buckle releaser, electronic buckle releaser, electronic tripping system and anti-traction rope of wandering away |
| CN211198365U (en) * | 2019-12-06 | 2020-08-07 | 河北万方中天科技有限公司 | Automatic unhooking device of crane |
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